Home / 278,629.82-384,607.25-165,451.76

Finding the Fourth Proportional to 278,629.82, 384,607.25 and 165,451.76

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Solution

The fourth proportional to 278,629.82, 384,607.25 and 165,451.76 is: 228,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,629.82 : 384,607.25 = 165,451.76 : x
  2. Step 2: Convert to fraction form
    278,629.82/384,607.25 = 165,451.76/x
  3. Step 3: Cross multiply
    278,629.82x = 384,607.25 × 165,451.76
  4. Step 4: Simplify right side
    278,629.82x = 63,633,946,421.26
  5. Step 5: Solve for x
    x = 63,633,946,421.26/278,629.82
  6. Step 6: Final answer
    x = 228,381.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.